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Series compensation application method for changing operating modes

An application method and series compensation technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, AC network circuits, etc., can solve the problem that controllable series compensation cannot adjust the series compensation for a long time, and achieve investment Benefit maximization, improved power transmission capacity, and easy-to-implement effects

Active Publication Date: 2012-10-24
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the unbalanced channel power flow, the controllable series compensation cannot adjust the series compensation degree for a long time to improve the power flow distribution

Method used

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  • Series compensation application method for changing operating modes
  • Series compensation application method for changing operating modes
  • Series compensation application method for changing operating modes

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Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] A series compensation application method for operating mode change, the application method comprising the steps of:

[0042] Step 1: Determine the maximum capacity of the line to install the series compensation;

[0043] Step 2: Adjust the access level of power transmission channels and nearby power sources and loads, and analyze the impact of reducing series compensation on power flow distribution and power transmission capacity;

[0044] Step 3: Determine the number and capacity of string complement segments;

[0045] Step 4: Analyze the impact on the voltage distribution and transient stability level of the transmission system after the series compensation is connected to the system in sections, and determine the application scheme of the series compensation.

[0046] The step 1 includes the following steps:

[0047] Step 1-1: Establish a simulat...

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Abstract

The invention provides a series compensation application method for changing operating modes, the application method includes the following steps of determining the maximum capacity of series compensation added to lines; adjusting access levels of power transmission channels, power supplies and loads in near regions, and analyzing the influence of reduced series compensation degrees on load flow distribution and power transmission abilities; determining the subsection number and capacity of the series compensation degrees; and analyzing the influence of the series compensation on voltage distribution of a power transmission system and transient stability when the series compensation is accessed to the system in subsections, and determining a series compensation application solution. According to the series compensation application method for changing the operating modes, when the series compensation is applied in the power transmission system, the compensation degrees of the series compensation can be flexibly changed, each stage of the compensation degrees can be stably operated for a long time, various operating modes of power supply changes and load changes can be adapted, the load flow can be effectively balanced, the power transmission capacity of the channels is improved, the function of the series compensation is fully exerted, and the construction investment efficiency of the power transmission channels and the series compensation device is maximized.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a series compensation application method for operating mode changes. Background technique [0002] The series compensation technology is to connect the capacitors in series in the transmission line, and shorten the equivalent electrical distance of the line through the impedance compensation method of compensating the inductive reactance of the transmission line through the capacitive reactance of the capacitor, reducing the voltage drop and power angle difference caused by power transmission, thereby improving the transmission system. Dynamic and transient stability margins, creating favorable conditions for high-power transmission. [0003] As a relatively mature and reliable technology, series compensation technology has been applied in power system for more than 80 years. Foreign research on fixed series compensation technology began in 1928 with the 33kV system of t...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/18
CPCY02E40/30
Inventor 申洪孙强李晶尚勇魏磊孙玉娇刘娟楠王雅婷
Owner CHINA ELECTRIC POWER RES INST
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